/Engine/Source/Runtime/CoreUObject/Public/Internationalization/PackageLocalizationUtil.h
`_
static bool ConvertSourceToLocalized ( const [FString](API\Runtime\Core\Containers\FString) & InSource, const [FString](API\Runtime\Core\Containers\FString) & InCulture, [FString](API\Runtime\Core\Containers\FString) & OutLocalized )